Finding the Fourth Proportional to 5,187.58, 7,158.57 and 2,949.15

Step by Step Solution

1. Step 1: Write the proportion equation
   5,187.58 : 7,158.57 = 2,949.15 : x
2. Step 2: Convert to fraction form
   5,187.58/7,158.57 = 2,949.15/x
3. Step 3: Cross multiply
   5,187.58x = 7,158.57 × 2,949.15
4. Step 4: Simplify right side
   5,187.58x = 21,111,696.72
5. Step 5: Solve for x
   x = 21,111,696.72/5,187.58
6. Step 6: Final answer
   x = 4,069.66